When I got the car, it had this weird heater valve on it that didn’t work, oh and it leaked. That was no good.
Thankfully that particular spill was planned, unlike a couple of later ones. I removed the two nuts that held the old valve on, and removed the hose clamp. The old valve came off easy enough, as did the gasket (yes, woah, an actual gasket?!)
Now, you can see one thing I did wrong in the above photo. A: the heater cable is bent at the end so doesn’t push in further, and B: that metal part in the clamp shouldn’t be there…. but I didn’t realise this was wrong until I fit the replacement heater cable.
The heater valve now works from the pull lever inside the car now.
One other coolant related issue I had noticed with the car was that there always seemed to be some coolant on the block below the thermostat. I finally traced this down to a weeping thermostat housing gasket. It’s hard to see in the photo, but obvious in person
I thought to myself, “oh, this will be a quick job. Just pop the housing off, make a new gasket and away we go”.
It didn’t go like that.
I took off the three nuts on the thermostat housing, and the two on the radiator, removed the bracket and then tried to remove the thermostat housing. It wouldn’t budge.
Unfortunately the stud didn’t survive the job, so I had to source a replacement. Once I saw the thermostat I was a bit suspicious of that, and a quick test showed that it was very sluggish to open. A new one of those, a gasket and a new thermostat housing were sourced.
I used the double-nut method to wind the new stud into the block, with a generous coating of copper grease on the threads. I also greased the actual studs, in the hopes they wont corrode to the housing again. The other two studs were OK to reuse.
I topped the coolant up, but I’ll need to actually run a flush through I think. There is a fair bit of brown crud in the system. I probably need to try a CLR-water mix flush to try to remove some of that corrosion in the block, but that’s another job for another day.
ADU9102MS – Heater Valve
88G221 – Heater Valve Gasket
JFF10003 – Heater Cable
GTS104 – Thermostat
12G103 – Thermostat Housing
GUG705558GM – Thermostat Housing Gasket
CHS2514 – Stud
GFK1114 – Washer
GFK3212 – Nut
Please note these parts are specific to my car and may vary. Please check before ordering.